Refrigerator-car



WQJ. oHAN.

REFRIGERATOR CAR.

APPLICATION FILED Nov. 6. 1919.

1,376,794. Patented May 3, 1921.

nue/Z221 221mm J Eam UNITED STATES WILLIAM J'. BOHAN, 0F ST. PAUL, MINNESOTA.

REFRIGERATOR-CAB.

lSpecification of Letters Patent.

,Y Patented May 3, 1921.

Application filed November` 6, 1919. Serial No. 336,098.

To all whom t may concern.:

Be it known that I, WILLIAM J. BoHAN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a certainnew and useful Improvement in Refrigerator-Cars, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings forming a part of this specification.

This invention relates to improvements in refrigerator cars.

As is well known, refrigerator cars heretofore have been of the wooden type and the same are unsatisfactory in .service due to the fact that such wood cars are subjected to weaving which soon produces cracks through which air is permitted to pass, thereby reducing the eiiicienc of the insulation, -increasing the loss o ice and materially interfering with maintenance of interior temperatures. There has therefore been a constantly growing d-emand for a refrigerator car in which the insulation can be properly maintained and without danger of cracks being produced in the walls of the car and the eiiiciency of the car thereby reduced.

The object of my invention is to provide a refrigerator car which will be free from the objections above pointed out in connection with wooden refrigerator cars and wherein the eiiicacy of the outside walls or sheathing of the car can be maintained and in carrying out this object of the invention, I employ a sheet metal or steel type of car wherein the joints between the sheets in all the walls thereof Inav be spot-welded to obtain a perfect seal and in which a much greater resistance is afforded against the injurious results of weaving that obtain in wooden cars.

vAnother object of the invention is to provide a method of applying the insulating materials to a steel car by which the insulation is utilized to increase the strength of the walls of the car to resist the heavy strains imposed thereon in service.

Another object 0f the invention is to provide a type of insulation such that it may be applied to and used with standard types of metal boX cars and the latter thus converted to use as-refrigerator cars.

In the drawing forming a part of this specification, Figure 1 is a vertical sectional view taken transversely of a car showing approximately one-half of the car and illustrating my invention. Fig. 2 is a horizontal sectional view taken substantially on the line 2-2 of Fig. 1 and illustrating more particularly the improved method of applying the insulation. Fig. 3 is a vertical sectional view illustrating the manner of applying insulation to the roof of thecar.

In said drawing, the car is shown of the sheet metal or steel type and has an outer sheathing of sheet metal as indicated at 10. The posts and braces for the walls of the car are in the form of commercial shapes as for instance channels indicated at 11-11. The side sills of the car are preferably in the form of Z-bars as indicated at 12 and the floor bridging is provided by other channels as indicated at 13. A floor sheathing is indicated at 113 between the channels 13 and the wood floor stringers indicated at 14 upon which is applied the floor insulation hereinafter described. The roof of the car is formed of sheet metal indicated at 15, the carlines being preferably pressings of L-shape as indicated at 16. n carrying out my invention, the outer sheathing of the side and end walls of the car, the floor sheathing and the roof sheathing, will preferably be formed by spot-welding various sheets of metal along their joints so as to not only obtain an exceedingly strong rigid non-weaving car body but also a structure wherein cracks will not be produced and hence a thorough seal maintained against transmission of air through the walls, floor or roof.

The fioor insulation is'formed as follows. Directly on top of the stringers 14 are the bottom boards indicated at 17 preferably of ll inch thickness, the same being tongued and grooved. Immediately above the boards 17 is a layer or coating of water-proofing compound as indicated at 18. Above the waterproofing compound is a layer of vapproximately two inches of cork insulation indicated at 19. Another layer or coating of waterproofing compound is employed on top of the cork insulation as indicated at 2O and the top layer is composed of the Hoor boards indicated at 21, the latter being preferably of 1?; inches thickness and tongued and grooved in the well known manner.

In the side walls of the car, I employ the following construction. Secured within each channel post or brace 11 is a wood furring indicated at 22. Said furring is made along its outer side so as to preferably snugly fit the channel and is'secured to the latter by suitable bolts or other fastening means indicated at 23. The furring is extended inwardly of the channel, but of a reduced width as indicated at 24, a distance approximating the width of the flanges of the channel posts. By reducing the thicle ness of the inwardly extended parts of the furring it is evident that shoulders are provided on each side thereof as indicated at 25--25.

In the panels thus formed between the strips of furring, I place what may be termed an intermediate lining indicated at 26, the same being-composed preferably of #E inch boards. These extend from one furring to the other and are seated against the shoulders 25-25. On the extreme inner edges of the furring, I apply a wood lining indicated at 27 preferably of inches tongued and grooved boards, the latter bein nailed to the furring strips.

Between the intermediate lining 26 and the inner lining 27, I employ several layers of insulation indicated conventionally at 28, said insulation being of a compressible nature and applied in layers, the 'innermost layer thereof indicated at 128 being cut of longer length than the. others and held in place by wrapping the ends thereof. around vertical wood cleating strips 294-29 which are nailed to the sides of the furring. In actual practice, layers of waterproof fabric will be interposed between the lntermediate lining 26 and the insulation 28 and another layer of waterproof fabric between said insulation 28 and the inner lining 27. Y

With the construction above described, it will be noted that I obtain dead air spaces indicated by the reference A between the pairs of the posts or braces. Furthermore, the insulation, particularly the intermediate and inner linings 26 and 27, are so applied to the posts and braces as to greatly strengthen the latter and assist them to resist the usual strains imposed thereon in service. It will also be noted that my improved insulation is applied in such manner that it can be utilized with steel cars of the box car type which are already in service and which are of more or less standard construction.

To insulate the upper part or top of the ear, I apply transversely extending wood furring strips 30 to the carlines 16, as .by means of bolts 31. To the under sides of these furring strips 30 the intermediate wood lining 32 is first applied. Beneath thisl is applied the several layers of insulating material 33, the latter being held in place along each carline by a clamping strip 34 bolted to the corresponding furring 30. The inner lining of tongued and grooved boards is finally applied, the same being indicated at 35 and adapted to be nailed to the 'clamping strips 34. In the roof construction as in the side wall construction, a waterproof fabric is preferably utilized between the intermediate lining 32 and the insulation 33 as indicated at 135 and another layer 36 between the insulation 33 and the inner lining 35. It will lbe noted that the roof construction provides a relatively large dead air space B and which 'effectively limits the transmission of heat.

Although I have herein shown and described what I now consider the preferred manner of carrying out my invention, the same is merely illustrative and I contemplate such changes and modifications as come within the scope of the claims appended hereto. I

I claim:

1. A refrigerator car of the character described comprising, in combination, a car body having side walls composed of metal, posts and metal sheathing on the exterior thereof, an insulation for said walls including, an inner wood lining, an intermediate wood lining, additional insulating material between said intermediate and inner linings, l

and means forv anchoring said insulation to the inner sides of the posts to thereby leave dead air spaces vbetween the outer sheathing .of the car and the intermediate lining.

2. In. a refrigerator car having the walls thereof composed of outer sheet metal sheathing and metal posts, the combination with an intermediate wood lining spaced from. said sheathing a distance corresponding to the depth of the posts and leaving dead air space between the sheathing and said intermediate lining, of an inner wood lining, and insulating. material interposed between said intermediate and inner linings.,

3. In a refrigerator car having a wall thereof composed of channel posts and an outer sheathing applied thereto, the combination with furring seated within said channels and extending inwardly thereof; of an intermediate lining extending between the furring and spaced from said outer sheathing; an inner lining secured to the inner edges of said furring; and insulating material disposed between said inner and intermediate linings.

4. In a car having channels constituting a part of the framework thereof, the channels having their flanges extended toward the interior of the car, the combination with furring strips seated within and secured to said channels and extending inwardly thereof; of an intermediate lining arranged in panels and extending between the furring strips; an inner lining applied to the inner edges of said furring strips and extending across the latter; and insulating material disposed between said intermediate and inner linings, said insulating material being arranged in panels between the furring strips.

5. A car having the roof, floor and walls thereof each composed of an outermost ply of sheet metal, an intermediate lining spaced from the corresponding outermost sheet metal ply, an innermost wood lining spaced from the respective intermediate lining, and insulating material interposed between the innermost and intermediate linings.

6. In a refrigerator car, the combination with a side wall thereof composed of an outer sheet metal sheathing and channel posts on the inner side thereof, the flanges of the channels extending inwardly, of wood furring strips seated within and secured to the channels and extending inwardly thereof, an intermediate lining arranged in panels between the furring strips and spaced from the outside sheathing of the car, an inner lining secured to the inner edges of the furring strips, and insulating material interposed between the intermediate and the inner linings.

7. An insulated car wall comprising, an outside sheet metal sheathing, channels secured to the inner side thereof, the flanges of the channels extending inwardly, wood furring strips seated within the channels and secured thereto, said furring strips being i'extended inwardly of the channels of reduced width, an intermediate board lining extending between each pair of furring strips and spaced from the outer sheathing of the wall a distance corresponding to the depth of the channel flanges, layers of insulating material extending between the furring strips on the inner side of said intermediate lining, cleats for securing the innermost layer thereof to the furring strips, and an inner wood lining secured to the inner edges of the furring strips.

8. In a refrigerator car having portions of the frame-work thereof comprised of commercial rolled shapes with flanges extending inwardly, the combination with furring strips extending lengthwise of said shapes and secured thereto and extending inwardly thereof, said furring strips being shouldered along opposite sides thereof, of an intermediate board lining between each pair of furring strips and seated against the corresponding shoulders thereof, layers of insulating material extending between each pair of furring strips on the inner side of said intermediate lining, cleats extending parallel tothe furring strips and secured to the latter, said cleats retaining the innermost layer of insulating material between them and the furring strips, and an inner board lining applied to the inner faces of the fuiring strips.

9. A .refrigerator car having the walls, roof and ioor thereof .provided with metal sheathing composed of sheets permanently rigidly united, flanged posts on the inner sides of the side walls, the flanges extending inwardly, wood furrin strips secured to 'said flanged posts an extendin inwardly of the latter, an intermediate lining arranged in panels between the furring strips and spaced from the outside sheathing of the car, an inner. lining secured to the inner /edges of the furring strips, and insulatin material interposed between the intermediate and inner linings.

10. An insulated car wall-comprising, anv

outside sheathing composed of metal sheets rigidly united by spot-welding along the joints, channels secured to the inner side of said sheathing with the flanges of the channels extending inwardly, Wood furring strips seated within the channels and secured thereto, said furring strips being extended inwardly of the channels and of reduced width, an intermediate board lining extending between each pair of furring strips and spaced from said outer sheathing of the wall, layers of insulating material extending between the furring strips on the inner side of said intermediate lining n means for securing said insulating material to the furring strips and an inner wood lining secured to the inner edges of the furring strips.

In witness that I claim the foregoin I have hereunto subscribed my name this l th day 0f Cctober, 1919.

WILLIAM J. BOHAN. Witnesses G. E. AYNsLnY, F. J. GEHAN. 

